Cisco WS-C3560E-48PD-SF Command Reference - Page 298
mls qos srr-queue input threshold, mls qos srr-queue
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mls qos srr-queue input threshold Chapter 2 Catalyst 3560 Switch Cisco IOS Commands mls qos srr-queue input threshold Use the mls qos srr-queue input threshold global configuration command to assign weighted tail-drop (WTD) threshold percentages to an ingress queue. Use the no form of this command to return to the default setting. mls qos srr-queue input threshold queue-id threshold-percentage1 threshold-percentage2 no mls qos srr-queue input threshold queue-id Syntax Description queue-id threshold-percentage1 threshold-percentage2 ID of the ingress queue. The range is 1 to 2. Two WTD threshold percentage values. Each threshold value is a percentage of the total number of queue descriptors allocated for the queue. Separate each value with a space. The range is 1 to 100. Defaults When quality of service (QoS) is enabled, WTD is enabled. The two WTD thresholds are set to 100 percent. Command Modes Global configuration Command History Release 12.1(19)EA1 Modification This command was introduced. Usage Guidelines QoS uses the CoS-to-threshold map or the DSCP-to-threshold map to decide which class of service (CoS) or Differentiated Services Code Points (DSCPs) values are mapped to threshold 1 and to threshold 2. If threshold 1 is exceeded, packets with CoS or DSCPs assigned to this threshold are dropped until the threshold is no longer exceeded. However, packets assigned to threshold 2 continue to be queued and sent as long as the second threshold is not exceeded. Each queue has two configurable (explicit) drop threshold and one preset (implicit) drop threshold (full). You configure the CoS-to-threshold map by using the mls qos srr-queue input cos-map global configuration command. You configure the DSCP-to-threshold map by using the mls qos srr-queue input dscp-map global configuration command. Examples This example shows how to configure the tail-drop thresholds for the two queues. The queue 1 thresholds are 50 percent and 100 percent, and the queue 2 thresholds are 70 percent and 100 percent: Switch(config)# mls qos srr-queue input threshold 1 50 100 Switch(config)# mls qos srr-queue input threshold 2 70 100 You can verify your settings by entering the show mls qos interface [interface-id] buffers or the show mls qos input-queue privileged EXEC command. 2-266 Catalyst 3560 Switch Command Reference 78-16405-05